User's Manual

ManualsBrandsGraco ManualsHot Melt EquipmentGraco 3A2347T - InvisiPac HM25

Setup

24 3A2347T

PLC Connection

A PLC can control and monitor all items shown in the

dropdown menus on the System 1 screen in the Setup

screens.

Customer Input Dropdown Options

Customer Output Dropdown Options

NOTE: All outputs are normally open when power is

OFF. For Error (Alarm) output, the contacts open when

an alarm occurs. For all others, contacts close.

NOTE: The InvisiPac system ships with two

screw-terminal connectors that plug into MZLP

connectors H1 and H2. Connectors are located in a bag

on the inside of the electrical enclosure front access

door. To replace the connectors, order kit 24P176.

1. On the System 1 screen (in the Setup screens)

select the function of each input on MZLP connector

H1 and each output on MZLP connector H2.

2. Turn main power switch OFF.

3. Remove electrical enclosure front access door.

4. Route I/O cable through strain relief in electrical

enclosure. See Customer I/O Cable (S) in F

. 1 on

page 8.

5. Remove power from PLC.

6. Connect the PLC to connectors H1 and H2.

NOTE: Each connector has four signals. The MZLP

board specifies the input range for each signal. See the

following table for pin assignments.

Inputs: High: 10-30 Vdc, Low: 0-5 Vdc. Inputs function

without concern for polarity. Applying “high” voltage will

turn the heaters on and enable channels. Removing

voltage will turn the heaters off and disable channels.

Outputs: 0-250 Vac, 0-30 Vdc, 2A.

Option Description

Disable Not used.

Heater On/Off Turn on or off the heating system and

pump.

Channel 1, 2, 3,

or 4 Enable/Dis-

able

Enable or disable hose and gun heat-

ing for that individual channel.

Option Description

Disable Not used.

System Ready Indicates when the system is up to tem-

perature and the pump is stalled at

pressure.

Error (Alarm) Indicates when there is an active alarm.

An active alarm will disable the heating

system and pump.

Error (Devia-

tion/Advisory)

Indicates when there is an active devia-

tion or advisory. An active deviation or

advisory will NOT disable the heating

system and pump.

Maintenance Due Indicates when the maintenance total

has reached the preset notification

value.

. 16: MZLP Board

H1 - Customer Input H2 - Customer Output

Signal Pin Signal Pin

1 1, 2 1 1, 2

2 3, 4 2 3, 4

3 5, 6 3 5, 6

4 7, 8 4 7, 8

F10